Matlab Tutorials

The find Function

The find function determines the indices of array elements that meet a given logical
condition. In its simplest form, find returns a column vector of indices. Transpose that
vector to obtain a row vector of indices. For example, Read More

Working with 8-Bit and 16-Bit Images

8-Bit and 16-Bit Indexed Images

Double-precision (64-bit) floating-point numbers are the default MATLAB representation for numeric data. However, to reduce memory requirements for working with images, you can store images as 8-bit or 16-bit unsigned integers using the numeric classes uint8 or uint16, respectively. An image whose data matrix has class uint8 is called an 8-bit image; an image whose data matrix has class uint16 is called a 16-bit image. Read More

Adding Text Annotations to Graphs

What Are Text Annotations?

Text annotations are boxes containing text strings that you compose. The box can have a border and a background, or be invisible. The text can be in any installed text font, and can include TeX or LaTeX markup. You can add free-form text annotations anywhere in a MATLAB figure to help explain your data or bring attention to specific points in your data sets. Read More